Nirn - Plane

Nirn is the plane of existence from the Elder Scrolls series. I'll admit I've only really played Skyrim, so that's where a majority of my lore knowledge is coming from here.

Races from here include Altmer , Argonian , Bosmer , Breton , Dunmer , Imperial , Khajiit , Nord , Orsimer , and Redguard . 

Nirn is another plane similar to Requerm in the sense that there's magic, a pantheon of deities with proven divine influence, and loads of different races that all love to attack each other over trivial nonsense. This is to say that there is a ton of lore available about Nirn that one can readily find on the various wikis that exist for The Elder Scrolls.